What 2 models preceeded the 911 but
 

followed the 356? If you don't know check out this link.

I thought the 911 followed the 356 but learned several new facts in this Edmunds article. It's a well written 10 page summary of Porsche history and model differences. It doesn't include everything but has quite a bit for 10 pages. Thought some others might like to see it if it hasn't already been posted here.

http://www.edmunds.com/reviews/generations/articles/100434/article.html